Feeding apparatus for metal belting and manufacturing apparatus for fins of a heat exchanger

The feeding apparatus for a metal belting, the metal belting having a plurality of through-holes in a feeding direction, the feeding apparatus comprising:

• a basic plate supporting said metal belting, said basic plate having a slit formed in the feeding direction, wherein the through-holes correspond to the slit when said metal belting is supported on said basic plate;
• a plurality of traveling plates being provided beneath and in parallel to said basic plate, said traveling plates being movable in the feeding direction of said metal belting;
• driving means for moving said traveling plates in the feeding direction of said metal belting;
• a plurality of feeding pins extending through said traveling plates, wherein lower ends of said feeding pins are projected from bottom faces of said traveling plates;
• biasing means for biasing said feeding pins downward;
• a plate cam being provided beneath said traveling plates, said plate cam applying force to upwardly move said feeding pins, against said biasing means, in a prescribed range, whereby upper ends of said feeding pins are fitted into the through-holes of said metal belting and move said metal belting to a prescribed length in the feeding direction;
• drawing means for drawing said feeding pins out of the through-holes of said metal belting, said drawing means being provided at an end in the feeding direction of said plate cam, the drawing means comprising;
• a slope section for gradually reducing the force, which is applied to upwardly move said feeding pins against said biasing means, said slope section being provided at an end, in the feeding direction of said feeding pins, of said plate cam;
• and
• a contact plate being movable into contact with flange sections, which are formed at lower end section of each feeding pin, so as to force the flange sections downward, said contact plate being provided in parallel to said slope section.

A manufacturing apparatus for fins of a heat exchanger comprising:

• a die set for forming a plurality of parallel lines of collared through-holes, each of which are formed in a longitudinal direction of a metal belting, in the transverse direction thereof;
• a slitter for continuously slitting between adjacent lines of the collared through-holes in the longitudinal direction of said metal belting so as to make slit plates, the slit plates include a line of the collared through-holes;
• a cutter for cutting said slit plates to a prescribed length;
• and
• a feeding apparatus having:
• a plurality of traveling plates movable in the feeding direction, the travelling plates being independently movable without a direct interconnection therebetween to thereby avoid play between the traveling plates;
• a plurality of feeding pins being provided between said slitter and said cutter, said feeding pins being received in the traveling plates and being movable therewith in the feeding direction of said slit plates, one end of the feeding pins fitting into the collared through-holes of each slit plate;
• biasing means being provided for each feeding pin, said biasing means biasing said feeding pins to separate from the collared through-holes;
• a plate cam having a cam face extending in the feeding direction of said slit plates, the cam face biasing said feeding pins against said biasing means, whereby said feeding pins are fitted into the collared trough-holes and are movable toward said cutter by a prescribed length;
• and
• driving means for moving said feeding pins in the feeding direction.

A manufacturing apparatus for fins of a heat exchanger comprising:

• a die set for forming a plurality of parallel lines of collared through-holes, each of which are formed in a longitudinal direction of a metal belting, in the transverse direction thereof;
• a slitter for continuously slitting between adjacent lines of the collared through-holes in the longitudinal direction of said metal belting so as to make slit plates, the slit plates include a line of the collared through-holes;
• a cutter for cutting said slit plates to a prescribed length;
• a feeding apparatus having:
• a plurality of feeding pins being provided between said slitter and said cutter, said feeding pins being movable in the feeding direction of said slit plates, one end of the feeding pins fitting into the collared through-holes of each slit plate;
• biasing means being provided for each feeding pin, said biasing means biasing said feeding pins to separate from the collared through-holes;
• a plate cam having a cam face extending in the feeding direction of said slit plates, the cam face biasing said feeding pins against said biasing means, whereby said feeding pins are fitted into the collared through-holes and are movable toward said cutter by a prescribed length;
• driving mans for moving said feeding pins in the feeding direction;
• drawing means for drawing said feeding pins out of said slit plate, said drawing means being provided at an end in the feeding direction of said plate cam, the drawing means comprising;
• a slope section for gradually reducing the force, which is applied to upwardly move said feeding pins against said biasing means, said slope section being provided at an end, in the feeding direction of said feeding pins, of said pale cam;
• and
• a contact plate being movable into contact with flange sections, which are formed at lower end section of each feeding pin, so as to force the flange sections downward, said contact plate being provided in parallel to said slope section.